Substituted linear thiourea additives for lubricants
AssigneeCK Witco Corporation
InventorsTheodore E. Nalesnik, Franklin H. Barrows
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Abstract
Compounds and lubricant compositions are disclosed that comprise a substituted linear thiourea of the structure wherein R1, R2, and R4 are independently selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl, and hydrogen; R3 is selected from the group consisting of alkyl, alkenyl, and combinations thereof; X is selected from the group consisting of (i) methylene, if, and only if, R3 is alkenyl, (ii) oxygen, and (iii) sulfur; and A is selected from the group consisting of alkylene and aryl.
Claims23
A composition comprising a substituted linear thiourea of the structure
- wherein R1, R2, and R4 are independently selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl, and hydrogen;
- R3 is selected from the group consisting of alkyl, alkenyl, and combinations thereof;
- X is selected from the group consisting of oxygen and sulfur;
- and A is selected from the group consisting of alkylene and aryl.
A composition comprising:
- (A) a lubricant, and
- (B) at least one a substituted linear thiourea of the structure
- wherein R1, R2, and R4 are independently selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl, and hydrogen;
- R3 is selected from the group consisting of alkyl, alkenyl, and combinations thereof;
- X is selected from the group consisting of oxygen and sulfur;
- and A is selected from the group consisting of alkylene and aryl.
Dependencies are inferred from the claim text.